Results for «bacteria»:

Global Acetic Acid Bacteria Market Research Report 2017 Gosreports new study：Global Acetic Acid Bacteria Market
Research Report 2017
2017 Global Acetic Acid Bacteria Industry Report is a professional and in-depth research report on
the world’s major regional market conditions of the Acetic Acid Bacteria industry, focusing on the
main regions (North America, Europe and Asia) and the main countries (United States, Germany,
Japan and China).

lec2 ‫‪GROWTH CURVE‬‬
‫احمد يحيى توفيق‬
When organism are cultured in appropriate fluid media (liquid medium), the organism
takes a little time to adjust itself on its new environment, there would be increase in
the size of bacteria without any multiplication for some time this is called
1-Lag Phase
 during this phase.

superbacteria is terrifying your health1213 superbacteria is terrifying your health
The pork chops you buy in the grocery neatly packaged in plastic and styrofoam may seem truly
sterile, but are, in fact, probably to be contaminated with disease-causing bacteria and not with
just any old bugs, but with hard-to-cure, antibiotic resistant types.

We trust our toothbrushes are handling
business and getting rid of diseasecausing, bacteria-containing plaque every
time we pass them along our teeth, but if
you’re using an old toothbrush you’re not
doing your mouth any favors.

In addition to spreading the bacteria from picking at existing acne, touching
and squeezing acne is one of the most prevalent causes of scarring, and is
one of the easiest tips to implement-but is sadly one of the most
overlooked.

lec3 HOST-PARASITE RELATION
‫احمد يحيى توفيق‬
Interactions between Bacteria Humans
There are many more bacterial cells on the surface of a human (including the
gastrointestinal tract) than there are human cells that make up the animal.

remediation pnsb
Utilization of Glyphosate, the Active Ingredient in RoundUp, as a Single Source Carbon (SSC)
Media for the Microbes in Quantum Growth‐Light
Objective
This study is designed to demonstrate that the bacteria in Quantum‐Light, a mixed microbial consortium, are capable of
utilizing glyphosate (the active ingredient in RoundUp) as a sole source of carbon. Utilization of glyphosate as a carbon
source would imply that these microbes can degrade the molecule into simpler, less toxic forms and that the use of
Quantum‐Light should be explored for remediation of glyphosate‐induced phytotoxicity and growth inhibition.
Materials and Methods
Quantum‐Light was chosen because it contains a consortium of multiple strains of vegetative bacteria that are know to
produce enzymes that are capable of hydrolyzing various types of hydrocarbons, a capability that spore‐forming bacteria
do not posses. A bacterial media was prepared consisting of disodium phosphate, ammonium sulfate, potassium sulfate,
magnesium chloride, sodium sulfide and a micronutrient solution. Four flasks were each filled with 240 mL of this
carbon‐free media along with 10 mL of Quantum‐Light.
Flasks 2, 3 and 4 had 50 ppm, 100 ppm and 500 ppm, respectively, of glyphosate added to them. Flask 1 served as the
control with no glyphosate added. Glyphosate is the only available source of carbon for the bacteria to utilize for growth
in this media. Two sets of initial Optical Density (O.D.) readings were taken at 550 nm using both the control and media
as blanks. As bacterial cell populations increase, the amount of transmitted light at 550 nm decreases. Therefore, taking
absorbance readings on a spectrophotometer correlates with bacterial growth, and is a tool for real‐time measurements
of bacterial population increases. The flasks were placed in an incubator‐shaker and were allowed to grow at 37 ºC with
constant agitation of 300 rpm. Subsequent O.D. readings were taken at 24, 48 and 120 hours post inoculation.
Results
As evident in table 1, the absorbance readings of flask 1 demonstrate a decrease in O.D. This means that not only was
there no cell growth taking place, but that the bacteria from the initial inoculation were dying off due to a lack of carbon
source to support growth.
Table 1 ‐ Optical Density measurements normalized to the media